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\bibitem{Razafindramisa_etal1996} {\textquotedblleft}\textit{Analysis of Malagasy medical herbs by X-ray fluorescence in total reflectivity}{\textquotedblright}. Razafindramisa FL, Andriambololona R, Brunel M, Van Grieken RE, Journal de physique: 4 \textbf{6}, 833 (1996)

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